JAJSCU6B
december 2016 – march 2021
ADS8661
,
ADS8665
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements: Conversion Cycle
6.7
Timing Requirements: Asynchronous Reset
6.8
Timing Requirements: SPI-Compatible Serial Interface
6.9
Timing Requirements: Source-Synchronous Serial Interface (External Clock)
6.10
Timing Requirements: Source-Synchronous Serial Interface (Internal Clock)
6.11
Timing Diagrams
6.12
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Analog Input Structure
7.3.2
Analog Input Impedance
7.3.3
Input Protection Circuit
7.3.4
Programmable Gain Amplifier (PGA)
7.3.5
Second-Order, Low-Pass Filter (LPF)
7.3.6
ADC Driver
7.3.7
Reference
7.3.7.1
Internal Reference
7.3.7.2
External Reference
7.3.8
ADC Transfer Function
7.3.9
Alarm Features
7.3.9.1
Input Alarm
7.3.9.2
AVDD Alarm
7.4
Device Functional Modes
7.4.1
Host-to-Device Connection Topologies
7.4.1.1
Single Device: All multiSPI Options
7.4.1.2
Single Device: Standard SPI Interface
7.4.1.3
Multiple Devices: Daisy-Chain Topology
7.4.2
Device Operational Modes
7.4.2.1
RESET State
7.4.2.2
ACQ State
7.4.2.3
CONV State
7.5
Programming
7.5.1
Data Transfer Frame
7.5.2
Input Command Word and Register Write Operation
7.5.3
Output Data Word
7.5.4
Data Transfer Protocols
7.5.4.1
Protocols for Configuring the Device
7.5.4.2
Protocols for Reading From the Device
7.5.4.2.1
Legacy, SPI-Compatible (SYS-xy-S) Protocols with a Single SDO-x
7.5.4.2.2
Legacy, SPI-Compatible (SYS-xy-S) Protocols With Dual SDO-x
7.5.4.2.3
Source-Synchronous (SRC) Protocols
7.5.4.2.3.1
Output Clock Source Options
7.5.4.2.3.2
Output Bus Width Options
7.6
Register Maps
7.6.1
Device Configuration and Register Maps
7.6.1.1
DEVICE_ID_REG Register (address = 00h)
7.6.1.2
RST_PWRCTL_REG Register (address = 04h)
7.6.1.3
SDI_CTL_REG Register (address = 08h)
7.6.1.4
SDO_CTL_REG Register (address = 0Ch)
7.6.1.5
DATAOUT_CTL_REG Register (address = 10h)
7.6.1.6
RANGE_SEL_REG Register (address = 14h)
7.6.1.7
ALARM_REG Register (address = 20h)
7.6.1.8
ALARM_H_TH_REG Register (address = 24h)
7.6.1.9
ALARM_L_TH_REG Register (address = 28h)
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.3
Application Curves
9
Power Supply Recommendations
9.1
Power Supply Decoupling
9.2
Power Saving
9.2.1
NAP Mode
9.2.2
Power-Down (PD) Mode
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
ドキュメントの更新通知を受け取る方法
11.3
サポート・リソース
11.4
Trademarks
11.5
静電気放電に関する注意事項
11.6
用語集
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
PW|16
MPDS361A
サーマルパッド・メカニカル・データ
発注情報
jajscu6b_oa
jajscu6b_pm
1
特長
アナログ・フロントエンド内蔵の 12 ビット ADC
高速
ADS8661:1.25MSPS
ADS8665:500kSPS
入力範囲をソフトウェアでプログラム可能
バイポーラ・レンジ:±12.288V、±10.24V、±6.144V、±5.12V、±2.56V
ユニポーラ・レンジ:0V~12.288V、0V~10.24V、0V~6.144V、0V~5.12V
5V アナログ電源:1.65V~5V の I/O 電源
1MΩ 以上の一定の抵抗性入力インピーダンス
最大 ±20V の入力過電圧保護
オンチップの低ドリフト 4.096V 基準電圧
優れた性能
DNL:±0.1LSB、INL:±0.15LSB
SNR:74dB、THD:–102dB
ALARM → HIGH、LOW スレッショルド
multiSPI™
インターフェイス、デイジーチェーン対応
工業用拡張温度範囲に対応:
–40℃~+125℃